Machine Design

Thermal Process Controllers

Series SC and SU Staging Controllers are designed for pilot-duty sequencing of multiple stages of either heating or cooling apparatus.

The Type A controllers require 4 to 20-mA signals from a temperature controller or slide-wire potentiometer. Input signals are optically isolated. Other features include solid-state output stages; up-down or circular operating modes; logic status lights; choice of current, voltage, or resistance input; 10-stage capacity; and fused output stages. Type B units with input cards that require no driver or temperature-controller input signal are available for boiler applications. All units are cRUus-compliant.

Athena Controls Inc., 5145 Campus Dr., Plymouth Meeting, PA 19462, (800) 782-6776, athenacontrols.com

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